The World Academy of Research in Science and Engineering (WARSE)
Generally the WLAN standard defines two frequency ranges one for the lower (2.4-2.48GHz) and the other for the upper (4.9- 6GHz). In Wi-Fi, the coverage for lower and upper is specified as 2.4-2.48GHz and 5.15-5.8GHz respectively. Commercially for wireless LAN two separate Ethernet port adapters are currently utilized in many places-one for the 2.4GHz band and for the 5.5GHz band. These adapters use two different antennas for their operations. In this paper, a modified slotted microstrip antenna resonating at 2.4GHz, 5GHz and 5.5GHz is proposed.